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ZPH02 Datasheet(PDF) 8 Page - Zhengzhou Winsen Electronics Technology Co., Ltd.

Part No. ZPH02
Description  Particles Sensor
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Manufacturer  WINSEN [Zhengzhou Winsen Electronics Technology Co., Ltd.]
Direct Link  https://www.winsen-sensor.com/
Logo WINSEN - Zhengzhou Winsen Electronics Technology Co., Ltd.

ZPH02 Datasheet(HTML) 8 Page - Zhengzhou Winsen Electronics Technology Co., Ltd.

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Zhengzhou Winsen Electronics Technology Co., Ltd
www.winsen-sensor.com
Tel: 86-371-67169097/67169670 Fax: 86-371-60932988
Email: sales@winsensor.com
Leading gas sensing solutions supplier in China!
6
Bad:8.00%-12.00%
Worst:>12.00%
This suggestion is just a reference, please set according to users’ real demand.
Communication protocol
1.General Settings
Stable 3.
Baud rate
9600
Interface level
5±0.2 V(TTL)
Data byte
8 byte
Stop byte
1 byte
Check byte
no
2.Communication command
Module sends the concentration value every other one second. Only send, no receive. Command as follow:
Stable 4.
Remarks:
1. Conversion of duty ratio:
Eg: sensor sends one frame data, the third byte is 0x12 and the forth byte is 0x13. It
means the duty ration of sensor’s output is 18.19%.
2. Conversion of PM2.5
K*18.19%=PM2.5 concentration. K is a proportionality coefficient , as experience, K=1000.
3.Check and calculation
/**********************************************************************
* Funtion name: ucharFucCheckSum(uchar *i,ucharln)
* Funtion description:Sum check(Negate the sum of send and receive protocol 1/2/3/4/5/6/7
and +1 )
**********************************************************************/
unsigned char FucCheckSum(unsigned char *i,unsigned char ln)
{
unsigned char j,tempq=0;
i+=1;
for(j=0;j<(ln-2);j++)
{
tempq+=*i;
i++;
}
0
1
2
3
4
5
6
7
8
Start
byte
Detection
type name
code
Unit (Low
pulse rate)
Integer part
of low pulse
rate
Decimals part
of low pulse
rate
Reservation
Reservation
Reservation
Check value
0xFF
0x18
0x00
0x00-0x63
0x00-0x63
0x00
0x00
0x00
0x00-0xFF


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